Introduction to hydropower decoration engineering

2022-07-22
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Installation of pipelines 1. The pipelines are arranged reasonably, laid firmly, horizontally and vertically, and the switches and valves are installed smoothly, which is flexible and convenient to use. 2. Concealed works should be checked and accepted before being closed. On the one hand, you know how much work has been done, on the other hand, you know how to do it. For example, in the water reform project, there is no waterproof in the groove after slotting. After the pressure test, check whether there is leakage, whether the water outlet is smooth, and whether the water meter operates normally. Connection of water supply pipeline and accessories

installation of pipelines

1. The pipelines are arranged reasonably, laid firmly, horizontally and vertically, the switches and valves are installed smoothly, and the use is flexible and convenient

2. Concealed works should be checked and accepted before being closed. On the one hand, you know how much has been done, on the other hand, you know how to do it. For example, in the water reform project, there is no waterproof in the groove after slotting. After the pressure test, check whether there is leakage, whether the water outlet is smooth, and whether the water meter operates normally. The connection of water supply pipes and accessories is not tight. These concealed works cannot have problems. If there are problems, it is difficult to maintain. Therefore, regular companies pay special attention to this area, and they often have a special hydropower construction team responsible for installation. There is special equipment for testing. Some small companies and decoration teams do not have pressure testing equipment, and often use tap water to replace it, which is difficult to ensure the quality. Water pipes should use high-quality products such as Longsheng pipes

3. The kitchen and bathroom should be waterproof, and the 24-hour closed water test should be done. Those without leakage can not be done. If the waterproof is damaged by re laying bricks or installing sanitary ware, it should be redone. The shower area should be 1.8m high

4. The floor of the toilet should be inclined to the floor drain so that the water can flow into the floor drain by itself without ponding

precautions for water and electricity acceptance

1. Whether electrical products are qualified products that meet relevant standards

2. The electrical wire shall be laid in a flame-retardant concealed pipe, and the wire shall not have knots and kinks in the pipe

3. It is forbidden to directly bury the conductor in the plastering layer

4, "live wire into the switch, zero wire into the lamp cap", socket wiring should comply with the provisions of "left zero, right fire grounding on the top"

5. Air conditioners and high-power electrical appliances should be provided with separate tubes, and wires should be 4mm2

6. Power line, TV line and telephone line shall not be installed in the same pipe

7. The switches and sockets are installed firmly, in the correct position, the cover plate is upright, close to the wall, and there is no gap around. After the installation of electrical works, electrical power on, trial lighting of lamps, switch control, etc. shall be carried out. After the completion of the project, the wiring construction drawings shall be provided to the customer, indicating the wire specification and direction

8. It is forbidden to use elbows at the corners of the electric tube. Springs must be used to penetrate into the inner bend of the tube. Under normal circumstances, the number of elbows shall not exceed 3

9. The color of wires should also be implemented according to the specifications. It should be: red, blue, two-color line, white

problems about construction

1. The power pipeline must not save money, especially the buried wall pipeline, otherwise there will be problems at that time, and it is difficult to remedy them

2. If the buried pipeline is allowed, it is best to make prefabricated pipeline. The prefabricated pipeline is that all pipelines are independent, and there is no three branch pipeline. In this case, even if the line needs to be replaced or increased, it can be easily realized by using the pipeline guide line

3. The power supply, data, TV and audio channels are separated independently. Due to the magnetic field phenomenon of AC power supply, regardless of the channel, it is easy to produce signal interference, just like some people's TV does not know why it is not clear, and they do not know why they always redial when surfing the Internet

4. The power line must not use multi strand wires (the core wire is twisted by multiple strands of thin copper wire). One of the multi strand wires has poor heat dissipation and the load capacity of a single core is poor. The most important thing is that it is prone to electrical corrosion (oxidation), and once oxidized, it is easy to break the core and heat

5. The power line must be connected to the pipeline. One is to protect the power line, and the other is to prevent moisture and short circuit

6. When buying a power cord, you must buy a two-layer protective leather power cord. Such a power cord will affect the heat dissipation, but I believe everyone doesn't want their own circuit short circuit to happen

7. If the copper wire is more than 220V AC, generally one square meter can safely pass through 3-4A electricity. According to this principle, estimate your own electrical power, reserve a little redundancy, and choose the power line suitable for the wire diameter. Generally speaking, the most used household power lines are 4 square wires and 2 square wires. 5 square lines

8. The power line should be shunted according to the function:

1). The air conditioner is one way, and the wire diameter is 4 square meters

2). One circuit of water heater, with a wire diameter of 4 square meters

3), socket one way (2.5 end/4 square start end)

4), lighting all the way 2. 5 square meters

9, and then separate according to different regions:

1. It is recommended to use 4 square lines for the kitchen line, because there are many high-power electrical appliances in the kitchen, such as refrigerators, disinfection cabinets, dishwashers, range hoods, etc

2. The toilet line is best to be independent, because the water vapor in this area is large

10. Air switches and leakage switches should be installed in the distribution cabinet. Generally speaking, leakage switches should be added to the lines of kitchen, bathroom, electric water heater and socket. Generally, lighting is not installed, and only air switches should be installed. The capacity of air switches depends on the estimated power

11. When laying pipelines, it must be checked to ensure that all lines enter the pipeline, the joints between pipes must not be saved, and all power lines cannot be connected in the pipeline, so as to ensure that the power line in the pipeline is a complete line, and the connection point should be set in the exposed places such as switches and sockets

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